linux-kernel - Re: [PATCH char-misc-next v2 01/13] misc: mic: SCIF header file and IOCTL interface

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Date:	Mon, 26 Jan 2015 10:07:35 -0800
From:	Sudeep Dutt <sudeep.dutt@...el.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	sudeep.dutt@...el.com, Arnd Bergmann <arnd@...db.de>,
	Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, Dave Jiang <dave.jiang@...el.com>,
	Nikhil Rao <nikhil.rao@...el.com>,
	Ashutosh Dixit <ashutosh.dixit@...el.com>
Subject: Re: [PATCH char-misc-next v2 01/13] misc: mic: SCIF header file
 and IOCTL interface

On Sun, 2015-01-25 at 20:39 +0800, Greg Kroah-Hartman wrote:
> On Mon, Jan 12, 2015 at 03:09:55PM -0800, Sudeep Dutt wrote:
> > --- /dev/null
> > +++ b/include/uapi/linux/scif_ioctl.h
> > @@ -0,0 +1,213 @@
> > +/*
> > + * Intel MIC Platform Software Stack (MPSS)
> > + *
> > + * This file is provided under a dual BSD/GPLv2 license.  When using or
> > + * redistributing this file, you may do so under either license.
> > + *
> > + * GPL LICENSE SUMMARY
> > + *
> > + * Copyright(c) 2014 Intel Corporation.
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of version 2 of the GNU General Public License as
> > + * published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful, but
> > + * WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> > + * General Public License for more details.
> > + *
> > + * BSD LICENSE
> > + *
> > + * Copyright(c) 2014 Intel Corporation.
> > + *
> > + * Redistribution and use in source and binary forms, with or without
> > + * modification, are permitted provided that the following conditions
> > + * are met:
> > + *
> > + * * Redistributions of source code must retain the above copyright
> > + *   notice, this list of conditions and the following disclaimer.
> > + * * Redistributions in binary form must reproduce the above copyright
> > + *   notice, this list of conditions and the following disclaimer in
> > + *   the documentation and/or other materials provided with the
> > + *   distribution.
> > + * * Neither the name of Intel Corporation nor the names of its
> > + *   contributors may be used to endorse or promote products derived
> > + *   from this software without specific prior written permission.
> > + *
> > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> > + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> > + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> > + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> > + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> > + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> > + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> > + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> > + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
> > + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> > + *
> > + * Intel SCIF driver.
> > + *
> > + */
> > +/*
> > + * -----------------------------------------
> > + * SCIF IOCTL interface information
> > + * -----------------------------------------
> > + */
> > +#ifndef SCIF_IOCTL_H
> > +#define SCIF_IOCTL_H
> > +
> > +/**
> > + * struct scif_port_id - SCIF port information
> > + * @node:	node on which port resides
> > + * @port:	local port number
> > + */
> > +struct scif_port_id {
> > +	uint16_t node;
> > +	uint16_t port;
> 
> variables that cross the kernel/user interface need to use the __*
> types, so these would be __u16.  Please fix up all of these structures
> in this file.
> 

Agreed, I have fixed it in v3 which will be posted this week.


> > +};
> > +
> > +/**
> > + * struct scifioctl_connect - used for SCIF_CONNECT IOCTL
> > + * @self:	used to read back the assigned port_id
> > + * @peer:	destination node and port to connect to
> > + */
> > +struct scifioctl_connect {
> > +	struct scif_port_id	self;
> > +	struct scif_port_id	peer;
> > +};
> > +
> > +/**
> > + * struct scifioctl_accept - used for SCIF_ACCEPTREQ IOCTL
> > + * @flags:	flags
> > + * @peer:	global id of peer endpoint
> > + * @endpt:	new connected endpoint descriptor
> > + */
> > +struct scifioctl_accept {
> > +	int			flags;
> 
> int?  Please be specific of your types for ioctls.
> 

Agreed, I have fixed this in v3 which will be posted this week.

Thanks,
Sudeep Dutt



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